public override Stream OpenRead()
{
if (!LoadFromDisk)
{
return(new NonSeekableMemoryStream(SqlBlobModelRepository.Get(ID).Blob));
}
return(FileHelper.GetOrCreateFileBlob(FilePath, ID));
}
public override Blob CreateBlob(Uri id, string extension)
{
var sqlBlobModel = new SqlBlobModel
{
BlobId = Blob.NewBlobIdentifier(id, extension)
};
SqlBlobModelRepository.Save(sqlBlobModel);
return(GetBlob(sqlBlobModel.BlobId));
}
internal static Stream GetOrCreateFileBlob(string filePath, Uri id)
{
if (File.Exists(filePath))
{
return(new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read));
}
var bytes = SqlBlobModelRepository.Get(id).Blob;
var directoryInfo = new DirectoryInfo(Path.GetDirectoryName(filePath));
if (!directoryInfo.Exists)
{
directoryInfo.Create();
}
File.WriteAllBytes(filePath, bytes);
return(new MemoryStream(bytes));
}
public override void Write(Stream stream)
{
SqlBlobModel blobModel;
if ((blobModel = SqlBlobModelRepository.Get(ID)) == null)
{
blobModel = new SqlBlobModel
{
BlobId = ID
};
}
var sqlBlobModel = blobModel;
using (var memoryStream = new MemoryStream())
{
stream.CopyTo(memoryStream);
sqlBlobModel.Blob = memoryStream.ToArray();
}
SqlBlobModelRepository.Save(sqlBlobModel);
}
public override void Delete(Uri id)
{
SqlBlobModelRepository.Delete(id);
FileHelper.Delete(id, this.Path);
}
